third_party/blink/renderer/platform/exported/web_font_description.cc

/*
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#include "third_party/blink/public/platform/web_font_description.h"

#include "third_party/blink/renderer/platform/fonts/font_description.h"

namespace blink {

WebFontDescription::WebFontDescription(const FontDescription& desc) {
  family = desc.Family().Family();
  generic_family = static_cast<GenericFamily>(desc.GenericFamily());
  size = desc.SpecifiedSize();
  italic = desc.Style() == ItalicSlopeValue();
  small_caps = desc.VariantCaps() == FontDescription::kSmallCaps;
  DCHECK(desc.Weight() >= 100 && desc.Weight() <= 900 &&
         static_cast<int>(desc.Weight()) % 100 == 0);
  weight = static_cast<Weight>(static_cast<int>(desc.Weight()) / 100 - 1);
  smoothing = static_cast<Smoothing>(desc.FontSmoothing());
  letter_spacing = desc.LetterSpacing();
  word_spacing = desc.WordSpacing();
}

WebFontDescription::operator FontDescription() const {
  FontFamily font_family;
  font_family.SetFamily(family);

  FontDescription desc;
  desc.SetFamily(font_family);
  desc.SetGenericFamily(
      static_cast<FontDescription::GenericFamilyType>(generic_family));
  desc.SetSpecifiedSize(size);
  desc.SetComputedSize(size);
  desc.SetStyle(italic ? ItalicSlopeValue() : NormalSlopeValue());
  desc.SetVariantCaps(small_caps ? FontDescription::kSmallCaps
                                 : FontDescription::kCapsNormal);
  static_assert(static_cast<int>(WebFontDescription::kWeight100) == 0,
                "kWeight100 conversion");
  static_assert(static_cast<int>(WebFontDescription::kWeight900) == 8,
                "kWeight900 conversion");
  desc.SetWeight(FontSelectionValue((weight + 1) * 100));
  desc.SetFontSmoothing(static_cast<FontSmoothingMode>(smoothing));
  desc.SetLetterSpacing(letter_spacing);
  desc.SetWordSpacing(word_spacing);
  return desc;
}

}  // namespace blink